【完美解决ecside2.0RC1在weblogic8.1.6环境下导出xls,csv 文件为空的情况】~法老修正完整版！

法老最先原创自: http://ecside.group.javaeye.com/group/topic/3002

今天是中秋节哟~~
--------------------------------------------
这2天一直在努力解决ecside2.0RC1在weblogic8.1.6环境下导出xls,csv 文件为空的情况~
期间 xiaotiaotiao 的一篇帖子给我不少灵感~
-------------------------------------
在1.3版本里对比看了下
发现XlsView里面的用到的outputstream
改为1.3版本的ByteArrayOutputStream
同时在beforeBody里改为outputStream=new ByteArrayOutputStream
-----------------------------------------------------------
于是我就尝试改了一下csvView.java结果成功了~开心了半天~
但是，用同样方法的处理xlsView.java却一直不成功，继续郁闷......
今天，我干脆从头到尾把csvView,xlsView做了一下比较和研究~发现xlsView是比csvView缩水处理了~~呵呵
注意原版xlsView和csvView在以下片段不同~
private ByteArrayOutputStream outputStream ;
private ByteArrayOutputStream outputStreamOut;
private PrintWriter out =null;
csvView 是定义了以上3个供输出的属性~而xlsView只有 outputStream 这一个！！
今天偶然又看了一下XlsViewResolver.java文件。。发现问题了~~~居然里面的代码给注释掉了...
这时候我在看xlsView的afterBody方法 发现直接返回outputStream对象~~
********************************************************
可能fins的本来的想法是直接把xls流提交给IE浏览器，让它自己解析出XLS文件下载~
没有使用PrintWriter方法输出！！事实证明TOMCAT5.5是可以的，WEBLOGIC就不可以~
********************************************************
好了，问题找到了·解决起来就快了~~~~
参考CsvView,CsvViewResolver对XlsView,XlsViewResolver做了修改
总结如下（Weblogic8.1.6,JDK1.4环境;TOMCAT 5.5 JDK1.6环境全部通过）：

/**/ /* Copyright 2006-2007 original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package  org.ecside.view;

import  java.io.ByteArrayOutputStream;
import  java.io.IOException;
import  java.io.PrintWriter;
import  java.util.ArrayList;
import  java.util.Iterator;
import  java.util.List;

import  jxl.Cell;
import  jxl.Workbook;
import  jxl.format.Border;
import  jxl.format.BorderLineStyle;
import  jxl.format.CellFormat;
import  jxl.format.Colour;
import  jxl.write.Blank;
import  jxl.write.Label;
import  jxl.write.Number;
import  jxl.write.NumberFormat;
import  jxl.write.WritableCellFormat;
import  jxl.write.WritableFont;
import  jxl.write.WritableSheet;
import  jxl.write.WritableWorkbook;
import  jxl.write.WriteException;
import  jxl.write.biff.RowsExceededException;

import  org.apache.commons.lang.StringUtils;
import  org.apache.commons.logging.Log;
import  org.apache.commons.logging.LogFactory;
import  org.ecside.common.log.LogHandler;
import  org.ecside.core.ECSideContext;
import  org.ecside.core.TableModel;
import  org.ecside.core.bean.Column;
import  org.ecside.preferences.PreferencesConstants;
import  org.ecside.table.calc.CalcResult;
import  org.ecside.table.calc.CalcUtils;
import  org.ecside.util.ECSideUtils;
import  org.ecside.util.ExportViewUtils;
import  org.ecside.util.ExtremeUtils;
import  org.htmlparser.Node;
import  org.htmlparser.NodeFilter;
import  org.htmlparser.Parser;
import  org.htmlparser.nodes.TagNode;
import  org.htmlparser.tags.TableColumn;
import  org.htmlparser.tags.TableRow;
import  org.htmlparser.tags.TableTag;
import  org.htmlparser.util.NodeList;

/** */ /**
 * @author Wei Zijun
 * @editor by pharaohsprince 法老 
 *         http://blog.youkuaiyun.com/pharaohsprince
 *         2007.09.25  中秋节
 */

/** */ /**
 * com.extremecomp.table.view.XlsView.java -
 *
 * @author paul horn
 */

public   class  XlsView  implements  View  ... {
    private Log logger = LogFactory.getLog(XlsView.class);
    public static final int WIDTH_MULT = 240; // width per char
    public static final int MIN_CHARS = 8; // minimum char width
    public static final short DEFAULT_FONT_HEIGHT = 8;
    public static final double NON_NUMERIC = -.99999;
    public static final String DEFAULT_MONEY_FORMAT = "$###,###,##0.00";
    public static final String DEFAULT_PERCENT_FORMAT = "##0.0%";
    public static final String NBSP = " ";
    
    public static final int colWidth=15;

    private WritableWorkbook wb;
    private WritableSheet sheet;

    private int rownum;
    private short cellnum;

    private String moneyFormat;
    private String percentFormat;
    private ByteArrayOutputStream  outputStream ;
    private ByteArrayOutputStream  outputStreamOut;
    private PrintWriter out =null;
    
    private String encoding;

    public XlsView() ...{
        encoding=ECSideContext.ENCODING;
    }

    public void beforeBody(TableModel model) ...{
        logger.debug("XlsView.init()");
        
        outputStream=new ByteArrayOutputStream(); 
        outputStreamOut=outputStream;
        out=new PrintWriter(outputStream);
        
        moneyFormat = model.getPreferences().getPreference(PreferencesConstants.TABLE_EXPORTABLE + "format.money");
        if (StringUtils.isEmpty(moneyFormat)) ...{
            moneyFormat = DEFAULT_MONEY_FORMAT;
        }
        percentFormat = model.getPreferences().getPreference(PreferencesConstants.TABLE_EXPORTABLE + "format.percent");
        if (StringUtils.isEmpty(percentFormat)) ...{
            percentFormat = DEFAULT_PERCENT_FORMAT;
        }

//        encoding = model.getExportHandler().getCurrentExport().getEncoding();

        
        try ...{
            wb = Workbook.createWorkbook(outputStream);
            sheet = wb.createSheet("Export Workbook",0);
            createHeader(model);
//            int totalCol=model.getColumnHandler().getColumns().size();

            rownum++;
            
            String extendRowBefore=(String)(model.getTable().getAttribute("ExtendRowBefore"));
            rownum+=createRow(sheet, getRows(extendRowBefore,encoding),(CellFormat)WritableWorkbook.NORMAL_STYLE, rownum,0)-1;
            
        } catch (Exception e) ...{
            LogHandler.errorLog(logger, e);
        }
  
      
    }
    
    
    public static TableRow[] getRows(String inputHtml,String encode) throws Exception ...{
        if (StringUtils.isBlank(inputHtml))...{
            return null;
        }
        inputHtml=inputHtml.trim();
        if (!inputHtml.startsWith("<table>")&&!inputHtml.startsWith("<TABLE>") )...{
            inputHtml="<table>"+inputHtml+"</table>";
        }
        Parser parser = Parser.createParser(inputHtml, encode);
        NodeList nodes = parser.extractAllNodesThatMatch(new NodeFilter() ...{
            public boolean accept(Node node) ...{
                return node instanceof TagNode;
            }
        });
        TagNode node = (TagNode)nodes.elementAt(0);
        
        return ((TableTag)node).getRows();
    }
    
    public static int getColumnNum(TableRow row)...{
        int totalCol=0;
        
        TableColumn[] columns=row.getColumns();
        
        for (int cn=0;cn<columns.length;cn++)...{
            String colspan=columns[cn].getAttribute("colspan");
            if (colspan!=null&&colspan.length()>0)...{
                try...{
                    totalCol+=Integer.parseInt(colspan);
                    continue;
                }catch(Exception e)...{}
            }
            totalCol++;
        }
        
        return totalCol;
        
    }
    
    public static int createRow(WritableSheet sheet,TableRow[] tableRows,CellFormat cellFormat,int startRow,int startCol) throws RowsExceededException, WriteException...{

        if (tableRows==null||tableRows.length<1) ...{ return 0; }
        int totalCol=getColumnNum(tableRows[0]);
//                 CellFormat cellFormat=(CellFormat)WritableWorkbook.NORMAL_STYLE;
                int colWidth=15;
            
            List mergeCells=new ArrayList();
                for (int rowNo=startRow;rowNo<startRow+tableRows.length;rowNo++ )...{
                    int idx=0;
                    for (int colNo=startCol;colNo<startCol+totalCol;colNo++)...{
                    Cell cell=sheet.getCell(colNo,rowNo);
                    if (cell instanceof Blank) ...{
                        continue;
                    }
                    TableColumn tdBean=((TableRow)tableRows[rowNo-startRow]).getColumns()[idx];
                    String title=ECSideUtils.specialHTMLToShowTEXT(tdBean.toPlainTextString());
                    
                    Label label=new Label(colNo,rowNo,title,cellFormat); 
                    sheet.addCell(label);
                    sheet.setColumnView(colNo, colWidth);
                    idx++;                 
                        int ce=Integer.parseInt(ECSideUtils.convertString(tdBean.getAttribute("colspan"),"1"))-1;
                        int re=Integer.parseInt(ECSideUtils.convertString(tdBean.getAttribute("rowspan"),"1"))-1;
                        
                        if (ce>=1 || re>=1)...{
                            ce=ce<0?0:ce;
                            re=re<0?0:re;
                            mergeCells.add(new int[]...{colNo,rowNo,colNo+ce,rowNo+re});
                            if (ce<1 && re>=1)...{
                                for (int srowNo=1;srowNo<=re; srowNo++)...{
                                    sheet.addCell(new Blank(colNo,rowNo+srowNo));
                                    sheet.setColumnView(colNo, colWidth);
                                }
                                continue;
                            }else if (re<1 && ce>=1)...{
                                for (int scolNo=1;scolNo<=ce;scolNo++)...{
                                    sheet.addCell(new Blank(colNo+scolNo,rowNo));
                                    sheet.setColumnView(colNo+scolNo, colWidth);
                                }
                                colNo+=ce;
                                continue;
                            }else if (ce>=1 && re>=1)...{
                                for (int scolNo=1;scolNo<=ce;scolNo++)...{
                                    for (int srowNo=1;srowNo<=re; srowNo++)...{
                                        sheet.addCell(new Blank(colNo+scolNo,rowNo+srowNo));
                                        sheet.setColumnView(colNo+scolNo, colWidth);
                                    }
                                }
                                colNo+=ce;
                                continue;
                            }
                        }
                    }

                }

                for (int i=0;i<mergeCells.size();i++)...{
                    int[] mc=(int[])mergeCells.get(i);
                    sheet.mergeCells(mc[0],mc[1],mc[2],mc[3]);
                }

        return tableRows.length;
    }
    
   
    private void createHeader(TableModel model) throws RowsExceededException, WriteException ...{
        rownum = 0;
        cellnum = 0;
        int etr=0;
        //HSSFRow row = sheet.createRow(rownum);

        
        WritableCellFormat cellFormat=new WritableCellFormat();
        WritableFont arial10font = new WritableFont(WritableFont.ARIAL,WritableFont.DEFAULT_POINT_SIZE,WritableFont.BOLD); 
        cellFormat.setBackground(Colour.GRAY_25);
        cellFormat.setBorder(Border.ALL, BorderLineStyle.THIN,Colour.GRAY_50);
        cellFormat.setFont(arial10font);
        
        boolean showHeader=model.getTable().isShowHeader();

        List columns = model.getColumnHandler().getHeaderColumns();
        

        String extendRowTop=(String)(model.getTable().getAttribute("ExtendRowTop"));
        
        try ...{
            etr=createRow(sheet, getRows(extendRowTop,encoding),cellFormat, rownum,0);
        } catch (Exception e) ...{
            LogHandler.warnLog(logger, e);
            etr=0;
        }
        rownum+=etr;
        

        if (showHeader || etr<1)...{
            for (Iterator iter = columns.iterator(); iter.hasNext();) ...{
                Column column = (Column) iter.next();
                String title = column.getCellDisplay();
                
                Label label=new Label(cellnum,rownum,title,cellFormat); 
                
                sheet.addCell(label);
    
                int valWidth = (title + "").length() ;
                valWidth=1;
                sheet.setColumnView(cellnum, valWidth*colWidth);
    
                cellnum++;
            }
        }else...{
            if (rownum>0)...{
                rownum--;
            }
        }

    }
    public void body(TableModel model, Column column) ...{
        if (column.isFirstColumn()) ...{
            rownum++;
            cellnum = 0;
            
        }

        try ...{

            String value = ExportViewUtils.parseXLS(column.getCellDisplay());

            if (column.isEscapeAutoFormat()) ...{

                writeToCellAsText(value, null);

            } else ...{
                writeToCellFormatted(value, null);
            }
            cellnum++;

        } catch (RowsExceededException e) ...{
            // TODO Auto-generated catch block
            LogHandler.errorLog(logger, e);
        } catch (WriteException e) ...{
            // TODO Auto-generated catch block
            LogHandler.errorLog(logger, e);
        }
    }

    public Object afterBody(TableModel model) ...{
        if (model.getLimit().getTotalRows() != 0) ...{
            try ...{
                totals(model);
            } catch (RowsExceededException e) ...{
                // TODO Auto-generated catch block
                LogHandler.errorLog(logger, e);
            } catch (WriteException e) ...{
                // TODO Auto-generated catch block
                LogHandler.errorLog(logger, e);
            }
        }
       
        try ...{
//            int totalCol=model.getColumnHandler().getColumns().size();
            rownum++;
            String extendRowAfter=(String)(model.getTable().getAttribute("ExtendRowAfter"));
            rownum+=createRow(sheet, getRows(extendRowAfter,encoding),(CellFormat)WritableWorkbook.NORMAL_STYLE, rownum,0);
            
            wb.write();
            wb.close();
            
            out.flush();
            out.close();
        } catch (WriteException e) ...{
            LogHandler.warnLog(logger, e);
        } catch (IOException e) ...{
            LogHandler.warnLog(logger, e);
        } catch (Exception e) ...{
            LogHandler.warnLog(logger, e);
        }
        return outputStreamOut;
    }



    private void writeToCellAsText( String value, WritableCellFormat styleModifier) throws RowsExceededException, WriteException ...{
        // format text
        if (value.trim().equals(NBSP)) ...{
            value = "";
        }
        Label label=new Label(cellnum,rownum,value); 
        if (styleModifier!=null)...{
            label.setCellFormat(styleModifier);
        }
        sheet.addCell(label);

    }

    private void writeToCellFormatted( String value, WritableCellFormat styleModifier) throws RowsExceededException, WriteException ...{
        double numeric = NON_NUMERIC;

        try ...{
            numeric = Double.parseDouble(value);
        } catch (Exception e) ...{
            numeric = NON_NUMERIC;
        }

        if (value.startsWith("$") || value.endsWith("%") || value.startsWith("($")) ...{
            boolean moneyFlag = (value.startsWith("$") || value.startsWith("($"));
            boolean percentFlag = value.endsWith("%");

            value = StringUtils.replace(value, "$", "");
            value = StringUtils.replace(value, "%", "");
            value = StringUtils.replace(value, ",", "");
            value = StringUtils.replace(value, "(", "-");
            value = StringUtils.replace(value, ")", "");

            try ...{
                numeric = Double.parseDouble(value);
            } catch (Exception e) ...{
                numeric = NON_NUMERIC;
            }

            if (moneyFlag) ...{
                // format money
                NumberFormat fivedps = new NumberFormat(moneyFormat); 
                WritableCellFormat fivedpsFormat = new WritableCellFormat(fivedps); 
                Number number = new Number(cellnum, rownum, numeric, fivedpsFormat); 
                if (styleModifier!=null)...{
                    number.setCellFormat(styleModifier);
                }
                sheet.addCell(number); 
             } else if (percentFlag) ...{
                // format percent
                numeric = numeric / 100;
                
                NumberFormat fivedps = new NumberFormat(percentFormat); 
                WritableCellFormat fivedpsFormat = new WritableCellFormat(fivedps); 
                Number number = new Number(cellnum, rownum, numeric, fivedpsFormat);
                if (styleModifier!=null)...{
                    number.setCellFormat(styleModifier);
                }
                sheet.addCell(number);
            }
        } else if (Math.abs(numeric - NON_NUMERIC) >= .0000001) ...{
            // numeric != NON_NUMERIC
            // format numeric
            Number number = new Number(cellnum, rownum, numeric); 
            if (styleModifier!=null)...{
                number.setCellFormat(styleModifier);
            }
            sheet.addCell(number); 
        } else ...{
            // format text
            if (value.trim().equals(NBSP)) ...{
                value = "";
            }
            Label label=new Label(cellnum,rownum,value); 
            if (styleModifier!=null)...{
                label.setCellFormat(styleModifier);
            }
            sheet.addCell(label);
        }

    }




    // Add to export totals
    public void totals(TableModel model) throws RowsExceededException, WriteException ...{
        Column firstCalcColumn = model.getColumnHandler().getFirstCalcColumn();
        
        WritableCellFormat cellFormatTotals=new WritableCellFormat();
        cellFormatTotals.setBackground(Colour.GRAY_25);
        cellFormatTotals.setBorder(Border.ALL, BorderLineStyle.THIN,Colour.GRAY_50);
        
      
        
        if (firstCalcColumn != null) ...{
            int rows = firstCalcColumn.getCalc().length;
            for (int i = 0; i < rows; i++) ...{
                rownum++;
                cellnum = 0;
                for (Iterator iter = model.getColumnHandler().getColumns().iterator(); iter.hasNext();) ...{
                    Column column = (Column) iter.next();
                    if (column.isFirstColumn()) ...{
                        String calcTitle = CalcUtils.getFirstCalcColumnTitleByPosition(model, i);
                        
                        if (column.isEscapeAutoFormat()) ...{

                            writeToCellAsText(calcTitle, cellFormatTotals);

                        } else ...{
                            writeToCellFormatted(calcTitle, cellFormatTotals);
                        }
  
                        cellnum++;
                        continue;
                    }

  
                    if (column.isCalculated()) ...{
                        

                        
                        CalcResult calcResult = CalcUtils.getCalcResultsByPosition(model, column, i);
                        java.lang.Number value = calcResult.getValue();

                        if (value != null)...{
                            //if (column.isEscapeAutoFormat()) {
                            //    writeToCellAsText( value.toString(), cellFormatTotals);
                            //} else {
                            //    writeToCellFormatted( ExtremeUtils.formatNumber(column.getFormat(), value, model.getLocale()), cellFormatTotals);
                           // }
                            if (StringUtils.isNotBlank(column.getFormat()))...{
                                writeToCellFormatted( ExtremeUtils.formatNumber(column.getFormat(), value, model.getLocale()), cellFormatTotals);
                            }else...{
                                 writeToCellAsText( value.toString(), cellFormatTotals);
                            }
                        } else ...{
                             Label label=new Label(cellnum,rownum,"n/a"); 
                             sheet.addCell(label);
                        }
                        cellnum++;
                    } else ...{
                        writeToCellFormatted( "", cellFormatTotals);
                        cellnum++;
                    }
                }
            }
        }

    }

}

/**/ /*
 * Copyright 2006-2007 original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package  org.ecside.view;

import  java.io.ByteArrayOutputStream;

import  javax.servlet.ServletRequest;
import  javax.servlet.ServletResponse;

import  org.ecside.core.Preferences;


/** */ /**
 * @author Wei Zijun
 * @editor by pharaohsprince 法老 
 *         http://blog.youkuaiyun.com/pharaohsprince
 *         2007.09.25  中秋节
 */

public   class  XlsViewResolver  implements  ViewResolver  ... {
    public void resolveView(ServletRequest request, ServletResponse response, Preferences preferences, Object viewData) throws Exception ...{
        if (viewData!=null)...{
            ByteArrayOutputStream out = (ByteArrayOutputStream)viewData;
            byte[] contents = out.toByteArray();
            response.setContentLength(contents.length);
            response.getOutputStream().write(contents);
        }
    }
}

/**/ /*
 * Copyright 2004 original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package  org.ecside.view;

import  java.io.ByteArrayOutputStream;
import  java.io.PrintWriter;
import  java.util.Iterator;
import  java.util.List;

import  org.apache.commons.lang.StringUtils;
import  org.ecside.core.TableModel;
import  org.ecside.core.bean.Column;
import  org.ecside.core.bean.Export;
import  org.ecside.table.calc.CalcResult;
import  org.ecside.table.calc.CalcUtils;
import  org.ecside.util.ExportViewUtils;
import  org.ecside.util.ExtremeUtils;

/** */ /**
 * For producing a delimited datafile view of the table. Default delimiter is
 * comma.
 * 
 * @author Wei Zijun
 * @editor by pharaohsprince 法老 
 *         http://blog.youkuaiyun.com/pharaohsprince
 *         2007.09.25  中秋节
 */
public   class  CsvView  implements  View  ... {
    public final static String DELIMITER = "delimiter";
    final static String DEFAULT_DELIMITER = ",";
//    private StringBuffer plainData = new StringBuffer();
    private ByteArrayOutputStream  outputStream ;
    private ByteArrayOutputStream  outputStreamOut;
    private StringBuffer rowBuffer =null;
    private PrintWriter out =null;
    private String delimiter;

    
    public void beforeBody(TableModel model) ...{
        outputStream=new ByteArrayOutputStream(); 
        outputStreamOut=outputStream; 
        /**//*
        outputStream=ContextUtils.getResponseOutputStream(model.getContext());
        
        outputStreamOut=null;
        if (outputStream==null){
            outputStream=new ByteArrayOutputStream();
            outputStreamOut=outputStream;
        }*/
        out=new PrintWriter(outputStream);
        Export export = model.getExportHandler().getCurrentExport();
        delimiter = export.getAttributeAsString(DELIMITER);
        
        List columns = model.getColumnHandler().getHeaderColumns();
        if (StringUtils.isBlank(delimiter)) ...{
            delimiter = DEFAULT_DELIMITER;
        }
        boolean isFirstColumn=true;
        
        rowBuffer = new StringBuffer();
        for (Iterator iter = columns.iterator(); iter.hasNext();) ...{
            Column column = (Column) iter.next();
            
            String value = ExportViewUtils.parseCSV(column.getCellDisplay());
            if (!isFirstColumn)...{
                rowBuffer.append(delimiter);
            }
            rowBuffer.append(value);
            isFirstColumn=false;            
        }
        if (columns.size()>0)...{
            rowBuffer.append(ExportViewUtils.BR);
            writeToOutputStream(rowBuffer.toString());
        }
        

    }

    
    public void body(TableModel model, Column column) ...{
 
        String value = ExportViewUtils.parseCSV(column.getCellDisplay());
        rowBuffer.append(value);
        if (column.isLastColumn()) ...{
            rowBuffer.append(ExportViewUtils.BR);
            writeToOutputStream(rowBuffer.toString());
        }else...{
            rowBuffer.append(delimiter);
        }
            
    }

    public Object afterBody(TableModel model) ...{
        totals(model);
        out.flush();
        out.close();
        return outputStreamOut;
    }
    
    public void totals(TableModel model) ...{
        
        rowBuffer = new StringBuffer();
        
        Column firstCalcColumn = model.getColumnHandler().getFirstCalcColumn();

        if (firstCalcColumn != null) ...{
            int rows = firstCalcColumn.getCalc().length;
            for (int i = 0; i < rows; i++) ...{

                for (Iterator iter = model.getColumnHandler().getColumns().iterator(); iter.hasNext();) ...{

                    Column column = (Column) iter.next();
                    if (column.isFirstColumn()) ...{
                        String calcTitle = CalcUtils.getFirstCalcColumnTitleByPosition(model, i);
                        rowBuffer.append(ExportViewUtils.parseCSV(calcTitle) );
                        continue;
                    }
                    rowBuffer.append(delimiter);
                    if (column.isCalculated()) ...{
                        CalcResult calcResult = CalcUtils.getCalcResultsByPosition(model, column, i);
                        java.lang.Number value = calcResult.getValue();
                        if (value != null)...{
                            if (StringUtils.isNotBlank(column.getFormat()))...{
                                rowBuffer.append(ExportViewUtils.parseCSV(ExtremeUtils.formatNumber(column.getFormat(), value, model.getLocale())));
                            }else...{
                                rowBuffer.append(ExportViewUtils.parseCSV(value.toString()) );
                            }
                        } else ...{
                            rowBuffer.append(ExportViewUtils.parseCSV(""));
                        }
                    } else ...{
                        rowBuffer.append(ExportViewUtils.parseCSV(""));
                    }
                }
                
                rowBuffer.append(ExportViewUtils.BR);
                writeToOutputStream(rowBuffer.toString());
            }
        }

    }


    public void writeToOutputStream(String rowContent)...{
            out.print(rowContent);
            rowBuffer = new StringBuffer();
    }

}

/**/ /*
 * Copyright 2004 original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package  org.ecside.view;

import  java.io.ByteArrayOutputStream;

import  javax.servlet.ServletRequest;
import  javax.servlet.ServletResponse;

import  org.ecside.core.Preferences;

/** */ /**
 * @author Jeff Johnston
 */
/** */ /**
 * @editor by pharaohsprince 法老 
 *         http://blog.youkuaiyun.com/pharaohsprince
 *         2007.09.25  中秋节
 */
public   class  CsvViewResolver  implements  ViewResolver  ... {
    public void resolveView(ServletRequest request, ServletResponse response, Preferences preferences, Object viewData) throws Exception ...{
        
        if (viewData!=null)...{
            ByteArrayOutputStream out = (ByteArrayOutputStream)viewData;
            byte[] contents = out.toByteArray();
            response.setContentLength(contents.length);
            response.getOutputStream().write(contents);
        }
    }
}

------------------------------------------------------------------
说明：编译ECSIDE2.0RC1的源代码，把以上文件修改后编译，把新的CLASS复制到JAR文件里覆盖对应文件即可~
打包好的jar文件
参考CsvView,CsvViewResolver对XlsView,XlsViewResolver做了修改
删除了原有的log4j配置文件·

 

ecside_2.0_RC1_by_pharaohs.jar
描述:	【完美解决ecside2.0RC1在weblogic8.1.6环境下导出xls,csv 文件为空的情况】~法老修正完整版之JAR包	下载
文件名:	ecside_2.0_RC1_by_pharaohs.jar
文件大小:	360 KB
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